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.....I just finished up my sprag replacement. The KTM part does fit, just make sure of the rotation. There is an arrow on it, as well as the stock Aprilia part. Tke KTM part is opposite, but it has no flange, like the Aprilia part does, so you can just flip it over. I had the battery charging, while I was putting it all back together.When I was done, I bumped the starter button....and she roared to life! I repeated it several times....no problems. Sweet! Time to start riding her now.

....yeah, WAAAAAY cheaper, for the same part. If I really wanted to, I could've rebuilt the factory piece, with the KTM part....but I didn't really see it necessary. My drive gear, and sprag housing were a little scarred up, but I dressed them up with some emery cloth, and they are perfect. No crunching, or any abnormal sounds....just the sweet, thumping pulses, when that big V-twin fires up!

I replaced the housing because it was obviously done. The gear was not so I left it. The sprag was also obviously done. The manual spells out the wear limits so it's easy to make a solid determination if the part is done or not. The sprag is not so easy to judge, but if you get the cheap (thanks to the work of folks on this forum) sprag, you might as well change it.

I could see the housing and the gear being fine and just the sprag being done. But you gotta get in there and inspect the parts.

Originally Posted by imdrax

Im curious if most of you simply replaced the sprag itself and opted not to replace the housing and gear?

....dang, $63?! I got mine from KTMworld, or something like that....lol. I also tore mine down to see what I was gonna need, exactly....first. I determined I was only needing the sprag. The housing, and gear, were still in spec....so I just dressed the surfaces with some emory cloth, and replaced the worn out sprag. Done deal, it works perfectly now.

Thanks, yeah they shipped quick. Im curious now looking at the flywheel puller how it is actually functional? Im used to automotive"pullers" and to me this looks just like a center bolt for a puller. Is that correct" will I need to go out and rent a puller set? Or can someone show me a picture of how I actually use this bolt.